Panasonic AG-MD830E User manual

ORDER NO, VSD9408M637
erviceManual
Panasonic SIVI-IS! ~~~ [}(]oo[po
Sec. T
Sec. 2
Sec. 3
Sec. 4
Sec.
51
Sec.
61
Sec.
71
Sec.
si
Operating Instructions
Disassembly Procedures
Mechanism
Electrical Adjustments
Block Diagrams
Schematic Diagrams
Circuit Board Diagrams
Exploded Views &
Replacement Parts Lists
SPECIFICATIONS
ITEM SPECIFICATION
Power
Source
AC 120V ~240V± 10%, 50-60Hz
Consumption Approx. 35Watts
Television CCIR Standard(625 lines, 50fields) PAL color signal
Format
Tape Speed
23.39mm/ s
Tape
Forma S-VHS, VHS
FF/REW
Approx. 2.5min. (with 180min. tape)
Time
Operating Temperature
5'C-40'C (41'F to 104'F)
Condition Humidity
35%-80%
Weight 7.0kg 4 heads (NOR (49t.t m) x
2, SS (35t.t m) x 2)
Heads 1 flying
(rotary) erase head (97 t.t m)
Luminance FM azimuth recording
Color signal Converted subcarrier phase shift recording
LINE (BNC); l.OVp-p,
750 unbalanced
Input S-VIDEO
(4P);
Y: l.OVp-p, 750 unbalanced
C: 0.3Vp-p (burst), 750 unbalanced
Video LINE (BNC); l.OVp-p,
750 unbalanced
Output S-VIDEO
(4P);
Y: 1.0Vp-p, 750 unbalanced
C: 0.3Vp-p (burst), 750 unbalanced
Signal-to- VHS; Color; 46dB
Noise
Ratio
B/W; 47dB
Horizontal
S- VHS; 400 lines
Resolution VHS; 240 lines
Panasonic
ITEM
Audio
Dimensions
Standard
Accessories
Optional
Accessories
625
Video Cassette Recorder
AG-MD830E
SPECI FICATION
Normal Audio Control; 1 stationary head 2 ch
Heads Hi-Fi Audio; 2
rotary head
Erase; 1 full track erase, 1 Audio track erase
Normal audio; 2 track (stereo)
Tracks Hi-Fi Audio; 2 channels (stereo)
LINE (PHONO) x
2; -8dB,47kO unbalanced
Input MIC (3.5mm PHONE);
-50dBv, 4.7kO unbalanced
LINE (PHONO) x
2; -8dB, 600 0 unbalanced
HEADPHONES (PHONE)
Output
-60dBv to -20dBv, 80 unbalanced
MONITOR(PHONO) -8dBv ,6000 unbalanced
Frequency Normal; 50Hz to 10kHz
Response Hi-Fi; 20Hz to 20kHz
Dynamic Hi-Fi; more than
90 dB
Range
Signal-to- Normal; better than 42dB
Noise Ratio
10 - 5/8"
(W) x 5 - 3/16" CH) x 14 - 3/8" CD)
270 (W) x 13l.5 (H) x 365.5 CD) mm
Power Cable
RS-232C Serial Interface ..........................·AG-IA823
34-pin Interface ·······································AG-IA34
Remote Controller ....·..............·................AG-A600
Pause Remote Controller" ..................·······VW-RM1
Weight and dimensions shown are approximate.
Specifications
are subject to change without notice.

INTRODUCTION
This Service Manual contains all the technical information which will allow service personnel
to understand and service the Panasonic S-VHS video cassette recorder model AG-MD 83 DE.
This model is developed for applications in industry and medical establishments and in
addition, it has an optional accessory RS-232C Interface is a capable of satellite
communication.
By the
use of S-VHS system, a sharp picture quality with high resolution is obtained, and
advanced editing
by easy operation is realized by the introduction of highly dependable
mechanisms.
Just slightly ahead
of our time ... Panasonic
CONTENTS
SPECIFICATIONS ...................................................... ·····················Cover
SAFETYPRECAUTIONS···································································· ·2
SERVICE INFORMATION ............................................................. ·····3
SECTION 1 OPERATING INSTRUCTIONS ··········································1-1
SECTION 2 DISASSEMBLY PROCEDURES ......................................... ·2-1
SECTION 3 MECHANISM ................................................................. ·3-1
SECTION 4 ELECTRICAL ADJUSTMENTS ··········································4-1
SECTION 5 BLOCK DIAGRAMS ...................................................... ···BLK-1
SECTION 6 SCHEMATIC DIAGRAMS
················································SCM-1
SECTION 7 CIRCUIT BOARD DIAGRAMS ......................................... ·CBA-1
SECTION 8 EXPLODED VIEWS & REPLACEMENT PARTS LISTS ············PRT-1
-1-

SAFETY PRECAUTIONS
GENERAL GUIDELINES
1. When servicing observe the original lead dress. If a short
circuit isfound, replac all parts which have been overheated
or damaged by the short circuit.
2. After servici ng, see to it that aII the protectiv devices such as
insulation barriers, insulation papers shields are properly
installed.
3. After servicing make the following leakage current checks
to prevent the customer from bei ng exposed to shock
hazards.
LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two
prongs onthe plug.
2. Measur the resistance value, with an ohm meter, between
the
jumpered AC plug and each exposed metallic cabinet
part on the equipment such as screwhead connectors, contrl
shafts, etc. When the exposed metallic part has a return
path to the chassis, the reading shoulb be between 1M Q
and 5.2MQ.
When the exposed metal dose not have a return path to the
chassis, the reading m ust be 00 .
AC VOLTMETER
Hot-Check Circuit
TO
APPLIANCE'S
EXPOSED
METAL PARTS
0.15,u F
Figure 1
COLD
WATER PIPE
(EARTH GROUND)
LEAKAGE CURRENT HOT CHECK (See Figure 1)
1. Plug the AC cord directly into the AC outlet.
Do not use an isolation transformer for this check.
2. Connect a 1.5KQ, 10W resistor, inparallel with 0.15,u F
capacitor, between each exposed metallic part on the set an
a
good earth grou'nd such as a water pipe, as shown in
Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measur the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage
at each poi nt.
5. Reverse the AC plug in the AC outlet repeat each of the
above measurements.
6. The potantial at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliamp. In case a
measurement is outside of the limits specified, there is a
possiblity of a shock hazard, and the equipment should be
repa ired and rechecked before it is returned to the
customer.
ELECTROSTATICALLY SENSITIVE( ES) DEVICES
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically sensitive (ES) Devices. Examples of
typical ES devices are integrated circuits and some field-effect
transistors and semiconductor "chip" components. The
following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor
component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known
earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed
for potential shock reasons prior to applying power to the
unit under test.
2.
After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grounded tip soldering iron to solder or
unsolder ES devices.
4. Use only an anti-static solder removal device classified as
"anti-static" can generate electrical charges sufficient to
damage ES devices.
5.
Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package untilimmediately before you are ready to install
it. (most replacement ES devices are packaged with leads
electrically shorted together by conductive foam,
aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from
the leads of replacement ES device, touch the protective
material to the chassis or circuit assembly into which the
device
will be installed.
CAUTION: Be sure no power is applied to the chassis or
circuit, and observe all otner asfety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devoces. (Otherwise harm less mother such
as the
brushing together of your clothes fabric or the lifting
of your foor from a carpeted floor can generate static
electricity sufficient to damage an ES device).
-2-

SERVICE INFORMATION
1. EXTENDERS
1. EXTENDER BOARD 50P (VFK0945) MJiWl
FOR AUDIO (1 ), VIDEO (1 ), (2) and (3) P.C. BOARDs
2. EXTENDER CODE 8P (VFK0828) SAME AS AG-6730 etc.
FOR POWER SUPPLY UNIT
EXTENDER BOARD 50P
(VFK0945)
VI DEO
(2) C. B.A.
VIDEO (3) C.B.A.
-3-

2. CIRCUIT BOARD LAYOUT
POWER SUPPLY (1) C.BA POWER SUPPLY (3) C.BA
REF. No. 1100 SERIES REF. No. 1000 SERIES
POWER SUPPLY
(2) C.BA
REF. No. 1000 SERIES
AUDIO (1) C.BA
VIDEO (1) C. BA
REF. No. 8000 SERIES
~Jt---_ VIDEO (2) C.BA
HEAD AMP C.BA ~
REF. No. 5000 SERIES , • ./"1
I .......... :./1J .. ~ .....
~ .. ~r'" I ........... "
, • ........ ; ... ', .... 1 .... I .... 1
FRONT (1) ~ (4) C.BA
REF. No. 6700 SERIES
1""'--: I -..I............ I
V"..... I -< '
........ I .......... '1
r:..... I
I ....... .....J....... ........ I
I ......... <; ............ "'"-."," I
I ..... - ... I
I .........~ J
... ... ..
l.. y .........
..... I ....
... I ..
... I ...... r
1'..... I ........
• .........&.. ..
L.............,
REEL DRIVE C.BA
REF. No. 2700 SERIES j
SERVO & SYSTEM CONTROL C.BA
SYSTEM CONTROL & SERVO C.B.A. AUDIO (1) C.B.A.
REF. No. 8000 SERIES
VIDEO
(3) C.BA
REF. No. 8000 SERIES
REAR JACK C.BA
REF. No. 6900 SERIES
MOTHER C.BA
REF. No. 900 SERIES
SYSTEM CONTROL SECTION: REF NO. 6000 SERIES
SERVO SECTION: REF. No. 2000 SERIES
NORMAL AUDIO SECTION: REF. No. 4000 SERIES
Hi-Fi AUDIO SECTION: REF. No. 4000 SERIES
CTL AMP SECTION: REF. No. 2300 SERIES
REEL SERVO SECTION: REF. No. 2500 SERIES
MOTER DRIVE SECTION: REF. No. 2300 SERIES
DC-DC CONVERTOR SECTION: REF. No. 2900 SERIES
-4-

3. INITIALIZE (HOUR METER, MENU SETTINGS)
1. Turn off the Power.
2. Connect a jumper wire between TP8006 on the VIDEO (3) C.B.A. and TP1 on the VIDEO (1) C.B.A.
3. Set the MODE LOCK switch to ON.
ONn
OFFLJ t
WOOf lOCl
<< HOUR METER RESET> >
Turn
on the Power while the PLAY, REC and PAUSE buttons are depressed.
PLAY
nEe PAUSE/STIlL
GJ
[!][E] OFF
lb:;~=~ ON
-PAGE
PAGE + POWER
< < MENU SETTINGS RESET> >
Turn
on the Power whi le the REW, STOP and FF buttons are depressed.
nEW
STOP FF
EJJ
[!]EJJ
OFF~~=~
-DATA DATA I· SHIFT V
-5-

4. DIMENSIONS
D
nn
@
\
It
SVIISI
270 (10-5/8" )
~
~
{
11 ""'@J
,-r-
,
,
Cl
Cl
~
,
<0
r--..
0
~
'-"
LO
.n
<0
N
'-'-
-6-
I~
131.5 (5-3/16" )
j'fi
~ h
~ ~
p
.--...
,
<Xl
'"
(Y')
I
~
~
'-"
LO
cri
<Xl
N
~
fr;
~
~
IV
~
\ f
.--...
UNIT: mm (inch)
,
LO
LO
<0
(Y')

OPERATING
INSTRUCTIONS
CONTENTS
Caution for AC Mains Lead ..........................................................................1-2
Features.......................................................................................................1-2
Controls........................................................................................................1-3
Front Panel ................................................................................................................................ 1-3
Rear Panel ................................................................................................................................ 1-3
Menu Screens ..............................................................................................1-4
Menu Item Settings ................................................................................................................... 1-4
Counter Section ...........................................................................................1-5
Memory Stop ............................................................................................................................. 1-5
Counter Reset ........................................................................................................................... 1-5
Remaining Tape ........................................................................................................................ 1-5
VISS Signal ............................................................................................................................... 1-6
Repeat Playback ....................................................................................................................... 1-6
Recording .....................................................................................................1-7
Preparations .............................................................................................................................. 1-7
Recording .................................................................................................................................. 1-7
Audio Monitoring........................................................................................................................ 1-7
Playback ......................................................................................................1-7
Preparations .............................................................................................................................. 1-7
Playback .................................................................................................................................... 1-7
Rewinding and Fast Forwarding ................................................................................................ 1-8
Search/Jog Playback ................................................................................................................. 1-8
To Finish Playback .................................................................................................................... 1-8
Still Playback and Slow-Motion Playback .................................................................................. 1-8
Field-by-Field Playback ............................................................................................................. 1-8
Unrecorded Blank Search ......................................................................................................... 1-8
Audio Dubbing .............................................................................................1-8
1 -1
U)
z
o
I-
U
:::J
cc
I-
U)
Z
(!)
Z
~
«
cc
w
0...
o

......
Caution for AC Mains Lead
FOR YOUR SAFETY PLEASE READ THE FOLLOWING TEXT CAREFULLY.
This product is equipped wijh 2 types of AC mains cable. One is for continental Europe, etc. and the other one is only for
U.K.
Appropriate mains cable must be used in each local area, since the other type of mains cable is not suitable.
FOR CONTINENTAL EUROPE, ETC.
Not to be used in the U.K.
FOR U.K. ONLY
This appliance is supplied with a moulded three pin
mains plug for your safety and convenience.
A 13 amp fuse is fined in this plug.
Should the fuse need to be replaced please ensure that
the replacement fuse has a rating of 13 amps and that
it is approved by ASTA or BSI to BS1362.
Check for the ASTA mark ~ or the BSI mark ~ on the
body of the fuse.
If the plug contains a removable fuse cover you must
ensure that
it is refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used
until a replacement cover is obtained.
A replacement fuse cover can be purchased from your
local Panasonic Dealer.
IF THE FITTED MOULDED PLUG IS UNSUITABLE
FOR THE SOCKET OUTLET IN YOUR HOME THEN
THE FUSE SHOULD BE REMOVED AND THE PLUG
CUT OFF AND DISPOSED OF SAFELY. THERE IS A
DANGER OF SEVERE ELECTRICAL SHOCK IF THE
CUT OFF PLUG IS INSERTED INTO ANY 13 AMP
SOCKET.
If a new plug is to be fitted please observe the wiring
code as shown below.
If in any doubt please consult a qualified electrician.
WARNING:
THIS APPLIANCE MUST BE EARTHED.
IMPORTANT: The wires in Ihis mains lead are coloured
in accordance with the following code:
Green·and·Yellow: Earth
Blue: Neutral
Brown:
Live
FOR U.K. ONLY
If the plug supplied is not suitable for your socket
out/et,
it should be cut off and appropriate one fitted.
As the colours of the wires in the mains lead of this
appliance may not correspond with the coloured mark-
ings identifying the terminals in your plug, proceed as
follows:
• The wire which is coloured GREEN·AND-YELLOW
must be connected to the terminal in the plug which is
marked with the letter E or by the Earth symbol ~ or
coloured
GREEN or GREEN-AND·YELLOW.
•
The wire which is coloured BLUE must be connected
to the terminal in the plug which is marked with the
letter Nor coloured BLACK.
• The wire which is coloured BROWN must be con-
nected to the terminal
in the plug which is marked with
the letter L or coloured RED.
How to replace the fuse
1. Open the fuse compartment with a screwdriver.
2. Replace the fuse.
- E-2-
OPERATING INSTRUCTIONS
Features
Rotary erase head
The rotary erase head is featured to ensure cleaner
edits during editing.
Hi-Fi
recording
High picture quality
Compactly designed for easy portability
Illuminated operation buttons
Repeat playback
A particular section on the tape can be continuously
played back repeatedly
or played back once.
Jog and shuttle functions
The unit's jog and shuttle functions enable playback
section to be located speedily using the search dial.
Mode locking
Even when an operation button has been pressed in
error, the mode lock function prevents the unit from
performing the operation corresponding to that button.
Unrecorded blank search
The unit detects unrecorded blanks which are 5. or
more seconds in length.
Automatic high-speed VISS search
By writing the VISS (VHS Index Search System)
signals
at particular scenes to be viewed, the scenes
can be easily located and played back automatically.
Audio dubbing
Audio can be added to the normal audio track during
post production editing.
Switch settings on screen menus
The unit's on-screen system enables switch settings to
be viewed on Ihe TV screen.
Auto head cleaning
This facility automatically cleans the video heads to
remove
any dirt.
Pause remote control supported
Recording can be started and stopped by remote
control using the VW-RM1 which is available as an
optional accessory.
RS-232C serial interface supported
The unit can be remote-controlled from a personal
computer by mounting the AG-IA823 interface which
is available as an optional accessory.
34-pin remote control supported
The unit can be operated from a distance of 5
meters or so using the AG·A600 (an optional acces·
sory) by installing the AG·IA34 interface which is
available as an optional accessory.
-E-5 -

Controls
Front Panel Rear Panel
(5)
(4)
(15)(20) (13)(14)
®
@
(11 )--++--+--"'8:88:88.
---f.lll-lf- (3)
(10)
o
(1 ) (9)
(8)
(7)
(6) (2) (12)
(21 ) (18) (19)(17)(16) (22) (23)
~Nl0.
I
--
Name Page No. Name Page
---- --- --
--_.-
.. _-------
_._._---------
Power switch
-8 Microphone jack (mini jack) E-14
t---
- ------
Operation buttons 9 Hi-Fi audio level control CH1/CH2 E-14
STOP, PLAY, REC, REW, FF,
-------- ------------ -------
f-----
2 PAUSE/STILL, AUDIO DUB,
E·ll-
10 Counter setting buttons
E'll
BLANK SEARCH E·17
11 Counter/audio level meter
E·ll
-- -- ----- --
1----------
3 Search dial E-16 Setting switch section
-4 Eject button/tape indicator -AUDIO
OUT selector E·15
5 Cassette holder -METER/AUDIO OUT switch (Hi·FilNORMAL) E'14
-
6 Tracking buttons E·16 12 VIDEO INPUT selector (S·VIDEO/UNE) E·14
S·VHS REC MODE selector (AUTO/OFF) E·14
7 Headphones jack (mini jack)/ E·14 MENU screen selector (SET/OFF) E·8
Headphone level control -
----- .. _----------
1--
No.
Name
Page No.
Name
Page
13 VIDEO inputconnector (BNC) E-14 Equipotential terminal V
14 S-VIDEO input connector (4P) E-14
AUDIO CHlICH2 input connectors When connecting this unit to any other
15 E-14 component, make absolutely sure that it
(PHONO) is properly grounded by connecting this
16 VIDEO output connector (BNC) E-15 terminal.
17 S-VIDEO output connector (4P) E-15 23
When connecting, use the terminal lug. -
AUDIO CH1/CH2 output connectors
and be sure to used wire with a cross-
18 (PHONO) E-15 sectional area of at least 1.0 mm z.
19 AUDIO MONITOR output connector -
cross-secti~
20 PAUSE REMOTE connector E-18
21 Blank panel or RS-232C/34-pin options E-18
Area:
Terminal Lug
22 Power socket
More than 1.0mm
2
L ____
MODE LOCK switch (ON/OFF) E-15
----'------------ ~---------- ---- --- --
"---
---
- E-6-
- E-?-
OPERATING INSTRUCTIONS

......
Menu Screens
The menu settings can be performed while monitoring the TV screen orthe level meter.
Setting up your VTR for properoperation.
When you receive your VTR, it will be set up as follows:
MENU A
COUNTER
INDtCATOR VIDEO MONITOR DEFAULTS
1001:00 VISS OFF
1002:00 TAPE SELECT E180
1003:01 AUTO BACK
ON
1004:00 TAPE IN MODE STOP
1005:01 TAPE END MODE REW
1006:00
RECTAPE END STOP
1007:01 STBY OFF TIME
5MIN
MENUB
COUNTER
INDtCATOR VIDEO MONITOR DEFAULTS
1008:01 HI·FI REC ON
1009:00 AUDIO DUB CH1.CH2
1010:00 EDIT OFF
1011:00 NOTCH OFF
If optional AG-IAB23 serial interface board is installed:
MENUC
COUNTER VIDEO MONITOR DEFAULTS
INDICATOR
3001:01 BIT LENGTH 8 BIT
3002:00 STOP BIT
STOP·l
3003:02 PARITY NONE
3004:03 BAUD RATE 9600
To reset any of these defaults:
1. Press the STOP Button to place the VTR into the stop
mode.
2. Set the MENU Switch to the SET position (Switch is located
under door on front panel).
NOTE: When in the menu set position PLAY. REC. FAST
FORWARD and REW will not function.
3. You can change these settings either by watching the
counter indicator on the VTR or by watching the video
monitor. .
4. To change the individual default settings use the PLAY or
REC buttons to select the different menu pages, which will
display the different settings.
5. To select the individual settings either use the FF button or
the inside search dial control. A flashing bar will highlight
your selection if you are viewing your video monitor. If you
use the counter indicator to make these changes, the first
four digits select the item you would like to change and the
last two selects the default setting (on/off, etc.).
The counter display codes are
on page E-9.
6. To change the default setting use either the STOP or REW
buttons.
7. After making the necessary changes, make sure to reset
the MENU set switch to OFF.
Operation
Use the operation buttons and search dial as shown
below.
STOP
[0] This moves the selection item cursor forward.
'EW
EJ)
- DATA
PLAY
G
.EC
m
FF
B
SHIFTY
OO:OFF
01 :REC
02:REC/PAUSE
OO:OFF
- 01 :REC
02:REC 8. PAUSE
This moves the selection item cursor backward.
OO:OFF OO:OFF
01: REC
02:REC/PAUSE
- 01 :REC
02:REC/PAUSE
This returns to the previous menu page.
This advances to the next menu page.
This moves the menu selection to the item
below.
TAPE IN MODE
TAPE END MODE
j
TAPE IN MODE
TAPE END MODE
OO:STOP
DO:STOP
OO:STOP
OO:STOP
~
\U
l This turns the inside search dial (jog function).
FF
Instead of using IEl] ,this can be used
SHIFTV
to move the menu selection to the item above
or below.
TAPE IN MODE
TAPE END MODE
j 1
TAPE IN MODE
TAPE END MODE
OO:STOP
00: STOP
OO:STOP
00: STOP
- E-8-
---- ~- -
OPERATING INSTRUCTIONS
1
Menu Item Settings
Counter
indicator
No. (.)
1001
1002
1003
1004
1005
1006
1007
Superimposed
monitor
VISS
TAPE SELECT
AUTO BACK
TAPE IN MODE
Setting (underlin'
ing denotes de-
fault setting)
00 : OFF
01 REC
02 : REC/PAUSE
00 : ··E1BO
01 : E240 ..
00 : OFF
01 . ON
00 STOP
01 : REW
TAPE END MODE 00: STOP
01 : REW
REC TAPE END
STBY OFF TIME
00 : STOP
01 : EJECT
00 : 0 MIN
01 : 5 MIN
02 : (30 MIN)
Description of function
VISS signal recording and counter memory operation
OFF: The VISS signal is nol recorded (neilher is Ihe
memory operation based on the VI SS signal
performed).
REC: The VISS signal is recorded by pressing the
REC and PLAY buttons together during record·
ing.
REC/PAUSE: The VISS signal is recorded when the
recording or recording pause mode is released.
"VISS' appears on the display tube when REC
or RECIPAUSE is selected.
-EISa: When a tape with a length of IBa minutes or
less is used.
E240-: When a tape with a length of 240 minutes or
more is used.
Auto back space recording function setting
ON: This ensures smooth continuity
in recording.
(The tape is rewound for approximately one
second when the REC Button is pressed in the
PLAY/STILL mode or the PAUSE/STILL Button
is pressed during recording. When the
PAUSE/STILL Button is pressed again, the tape
plays back for one second and then recording
starts.)
OFF: Normal REC/PAUSE operation
STOP: The unit is placed in the stop mode after the
tape has been loaded.
REW: The tape is rewound to its beginning, and then
it stops.
STOP:
REW: The tape stops when it comes to the end.
The tape is rewound to its beginning, and then
it stops.
STOP: The tape stops when it comes to the end.
EJECT: The tape is ejected when it comes to the end.
Standby
o MIN:
5 MIN:
30 MIN:
release time
With full loading STOP, the tape cylinder stops
immediately.
The tape cylinder stops after REC/PAUSE con·
tinued for 5 minutes or longer.
The tape cylinder stops after REC/PAUSE con·
tinued for 30 minutes or longer. (Every 5
minutes, however, the tape is advanced in the
forward direction by 3 frames.)
• This appears along with the figure representing the setting which is indicated on the counter section of the display tube.
- E-9-

(Jl
Counter
indicator
No.
1008
1009
Superimposed
monitor
HI-FI REC
AUDIO DUB
Setting (underlin-
ing denotes de- Description of function
fault setting)
00 : OFF
01 : ON
00 : CH1.CH2
01 CH1
02 : CH2
Hi-Fi audio recording (Cannot be used for audio DUB)
OFF: Hi-Fi audio is not recorded.
ON: Hi-Fi audio is recorded.
Selection of channel track for audio dubbing
CH1.CH2: The sound is added to
CH1 and CH2 simul-
taneously.
CH1: The sound
is added to CH1.
CH2: The sound is added to CH2.
1010 EDIT 00 : OFF (regular Editing/regular operation selection
See Note 1 operation) OFF: Regular operation
01 : ON (editing/ ON: For editing or dubbing
_________________ .... _______________________ d.ubbi.nJ!l _________________ . __ .... __________________________________ .
1 011 NOTCH 00 : OFF For setting the NOTCH ON or OFF
See Note 2 01 ON OFF: ?NoTCH OFF
ON: NOTCH ON
The items shown below are displayed when the AG-IA823 serial interface board is used.
Counter
indicator
No. Superimposed
monitor
Setting (underlin-
Ing denotes de- Description of function
fault setting)
... _---------------------_._-----------.----_ .... _-------------------------._ .. -_ ... _--------------------_.- .. _---_._--
3001
BIT LENGTH
3002 STOP BIT
3003 PARITY
3004 BAUD RATE
Notes:
00 : 7BIT
01 : 8BIT
00
STOP-1
01 : STOP-2
00 : ODD
01 EVEN
02 : NONE
00 : 1200
01 : 2400
02 : 4800
03 : 9600
Character length setting
7BIT: 7 bits
8BIT: 8 bits
Stop bit setting
STOP-1: 1 bit
STOP-2: 2 bits
Parity bit setting
ODD: Odd
EVEN: Even
NONE: None
Baud rate setting
1200: 1200 bps
2400: 2400 bps
4800: 4800 bps
9600: 9600 bps
1. Editfunction: When this is set ON, the noise reduction circuit for the video signals is set OFF. (The video noise will increase
!ilightly. For regular use, EDIT OFF recommended.)
2:NOTCH: When there is high level of noise in the luminance signals, it may also affect the chrominance signals. In a case like
this, set the
NOTCH to ON. Since the luminance signal band is reduced slightly when the filter is set to ON, the
NOTCH OFF position is recommended for regular use.
-E-10-
Counter Section
00
Memory Stop
RESET MEMO BEGIN END
DODO
,
.,
.,
"
To use the AUTO MEMORY STOP function:
1. Press the
MEMORY Button (MEMO)
To turn on the MEMORY STOP function, the following
syrnbol "-" will be indicated in Ihe counter display.
2. When the VTR is placed in record a VISS signal will
be placed on the video tape.
3. Now when the video tape is rewound or fast
forwarded it will stop at the slart of any recording.
4. This function can be turned off by pressing the
MEMORY Button (MEMO).
5. Repeat playback is covered on page E-13.
MEMO
o
Press this to turn on
"MEMORY STOP:
"EW
BE]
Press either REW or FF.
The tape stops
automatically at the VISS
write point or BGN set
point.
Each time the MEMORY Button is
MEt pressed. the mode changes in the
foHowing sequence:
·-VtSS"
Memory stop
j
1·time memory repeat
j
Continuous repeat
I
No indication (OFF)
This blinks while the VISS signal
is being written on the tape.
11 lights when VISS is set on the
menu.
Counter Reset
The counter display is reset to "0:00:00" when the
RESET Button is pressed. The BGN/END setting is
also
set to "0:00:00".
RESET
o
rl·nrl·rlrl
!...I· L.IL.I· L.I !...I.
Remaining Tape
"TAPE REMAIN" provides a rough indication of the
amount of tape remaining. The indication appears about
40 seconds after recording or playback has commenced
(it does not appear until this time).
TAPE REMAIN
I-----IF
Tape end Tape beginning
Each lamp going off one
after another indicates
that the tape is
approaching its end.
Note: The remaining tape indicator provides only a
rough indication: it is not meant to be precise.
- E-11 -
OPERATING INSTRUCTIONS

VISS Signal
After VISS has been set on the menu screen, the VISS
signal is automatically written on the tape when
recording is started.
It can also be written at the desired position on the tape
by pressing the REC Button and PLAY Button
simultaneously during recording.
• Locating particular scenes to be viewed becomes
easy if VI SS signals are written with each recording.
o "VISS" blinks on the counter section while the VISS
signal is being written.
(t) Select at or 02 for VISS on the menu screen.
at: REC
02: REC/PAUSE
(2) Press the MEMORY Button to establish the memory
mode. "VISS" now lights on the counter section.
Memory mode
Display Function
MEMORY 0 Playback
is repeated at
REPEAT the VISS write paint.
MEMORY 1 TIME Playback
is repeated
REPEAT
;J
only once at the VISS
write pOint.
MEMORY STOP -The tape stops at the
VISS write point.
(3) Press the FF or REW Button.
When the VISS signal is located, the unit automat-
ically operates in accordance with the memory
mode.
o Leave an interval of at least 30 seconds on the
tape for writing the VISS signal. (The signal will
not be detected' if the interval is less than 30
seconds long.)
VISS Setting
VISS signal writing rVISS
R blinks
while the VISS signal is being writ-
ten)
REC/PLAV/ REC/PLAY .l. To be written
----~. __ ----------------_t~~-----+Time
i, STOP
REW
••• --------+ •• ~------~
: STOP
,
,
REW
STOP
Memory
stop
(-)
~========:.~.=:.======:..-t~------~~~~ry
: PLAY ~ STOP repeat
: (;;»
, ,
,
,
,
REW I
~ .~ :
~--<.~---.------ -- ....
: PLAY STOP I I STOP
I Unrecorded :
: blank search :
I
REW
,
,
u
~
•
~~-----~
PLAY
(Leave an interval of at
least 30 seconds between
VISS signals.)
,
,
Unrecorded
blank search
Continuous
repeat
(<:..:»
• Time
- E-12-
OPERATING INSTRUCTIONS
Repeat Playback
(1) Turn VISS function OFF:
1) Press the MEMORY (MEMO) Button and select
continuous repeat playback (MEMORY REPEAT
<:..:> )
or 1-time repeat playback (MEMORY 1 TIME
REPEAT;;> ).
MEMO
o
Press this and turn on
" <:..:> "or" ;;>."
2) Press the BEGIN and END Buttons to set the
tape beginning and ending positions for repeat
playback.
BEGIN END
section
Repeat ~
1-------- Tape
3) Press the FF or REW Button.
(2) While "VISS" is on the display tube:
The VISS signal is used for repeat playback. (Refer
to the section on the VISS signal on page E-12.)
o When the beginning and ending positions are the
same, the tape will be repeatedly played back be-
tween the beginning position and tape end.
o When the ending position comes after the actual tape
end, the tape will be repeatedly played back between
the beginning position and tape end.
o When the beginning position comes before the actual
tape beginning, the tape will be repeatedly played
back between the tape beginning and end position.
o The precision of repeat playback may be impaired
when a short section (less than 20 seconds or so
long) of the tape is to be repeatedly played back.
BEGIN/END settings (set VISS to OFF on the
menu)
FF i
REW
---+
u
, STOP
,
,
,
,
REW
,
I U I
r •
.~
,
PLAY
: STOP
,
,
,
,
,
REW
i
,
~
..4
~
•
PLAY
t
BEGIN point
END point
(Leave an interval 01 al
least 20 seconds between
BEGIN and END.)
Memory stop
(-)
1-time
memory
repeat
(;;»
Continuous
repeat
(<:..:»
Time
- E-13-

Recording
0000
o
Microphone
(Sound from the micro-
phone is recorded as Hi-Fi
audio and normal audio on
channel 1.)
Note:
When a microphone has
been connected
to the MIC
jack and audio signals have
been connected to the
audio connectors for
Video signals (LINE)
Video signals (S-VIDEO)
Audio signals
recording, recording from
the microphone will take
precedence.
Channel Hi-Fi Normal
Audio input
UCH1 UCH1 "1 UCH1
R/CH2=--C-~~------I-'cRl==CH2 "2=---~_+RI(;f:l2 ___ ~
UCH1 & R/CH2 STEREO (UCH1 STEREO
& RlCH2) (UCH1 & R/CH2)
Preparations
• Load the cassette tape. (Check that the accidental
erasure prevention tab on the tape is still intact.)
• Check menu for correct set up.
• Set the S-VHS REC MODE selector to the desired
position.
AUTO: At this position, the tape is automatically
identified as a
VHS or S-VHS tape and the
signals are recorded in the corresponding
mode.
OFF: The signals are recorded in the VHS mode
regardless of the type of tape used.
• Depending on the .connections, set the INPUT Selec-
tor to S-VIDEO or LINE.
• When recording Hi-Fi audio, set On-Screen Hi-Fi REC
(default setting) to ON.
Audio Level Adjustment (Hi-Fi audio only)
The audio level can be adjusted for Hi-Fi audio only.
Turn the Hi-Fi Audio Level Control in such a way that
the audio level meter indication is adjusted to around 3
(but not past the 3 level).
= 6
= =
= 3 =
= 0
-3
-
-
-6
-
--10 -
-
The audio signals are recorded as indicated in the table
on the left.
*1: The UCHl audio signals are recorded on both chan-
nels 1 and 2.
*2: The R/CH2 audio signals are recorded on both chan-
nels 1 and 2.
Recording
Recording starts when the REC and PLAY Buttons are
pressed together
or press REC button first and then
PLAY. If PLAY button is pressed first. the continued
portion is disturbed.
The REC Button will not operate if the accidental
erasure prevention tab on the cassette tape has been
broken out. Use a tape with this tab still intact.
Proceed as follows when using the PAUSE Button_
(1) While playing back the tape, find the location to be
recorded_ Then press the PAUSE Button.
The unit is now set to the playback pause mode.
(2) Press the REC Button_
The REC Lamp now comes on, and the unit is set
to the recording pause mode.
(3) When the PAUSE Button is pressed again, the unit
is released from the pause mode, and recording
begins.
Audio Monitoring
The audio Signals are selected by the AUDIO OUT
Selector.
When using headphones, the volume can be adjusted
using the Headphone Level Control.
• To reduce the audio level, turn the control counter-
clockwise; to increase the audio level, turn it clock-
wise.
• The audio level may change if high-impedance
headphones are connected to the MIC jack.
- E-14-
Playback
TV monitor
Preparations
• Set the following switches on the unit to OFF.
Set the MODE LOCK Switch
to OFF.
Press the MEMORY Button to OFF.
• Switch on the power of the units connected to the
unit.
• Load the pre-recorded tape.
Audio Monitor Output Selector
Set the AUDIO OUT Selector to the position
corresponding to the type of sound desired.
MIX 0 Hi-fiO
CH1§
CH2 OORMD
LAUDlO OUT..J
Mode Lock Switch
This switch makes it impossible to operate the switches
on the front panel. When it is set to ON, none of the
front panel switch can be operated. However, even with
this switch at the ON position, the setting switches
inside the cover, the remote controller available as an
optional accessory or the RS-232C remote control
signals can
be used to operate the unit.
11
[]lgjJ
[Q)
0
GlGJIGl
0
oBlGJBl
~
.\2)~
I§
!l !l !l !l
!l I~
,.."
--to-
/ 0
Tracking
control buttons
SWitches can be set even
in the Mode Lock mode.
Playback
Press the PLAY Button.
Since this unit is equipped with an automatic digital
tracking function, there is normally no need to adjust the
tracking. However, if noise appears on part of the
playback picture as shown below, press the Tracking "+"
or "-" Button on the front panel to obtain a normal
picture.
To return to the automatic tracking, press the Tracking
"+" and "-" Buttons simultaneously_
TRACKING
+
DD
• Tracking adjustment may be necessary when playing
back a tape which has been recorded on a VTR other
than th is unit.
If this unit is brought too close to the TV monitor.
interference
from the monitor may affect the audio
signals, resulting
in noise. Be sure to keep the unit at
a distance (at least 20 cm or so) from the monitor.
- E-15-
OPERATING INSTRUCTIONS

Rewinding and Fast Forwarding
To rewind or fast forward the tape, press the REW
Button or FF Button when the tape has stopped moving.
Search/Jog Playback
Search playback (outside ring)
The unit is placed in the search mode by turning the
outside ring of the search dial.
A tape can be played back up to t t times the normal
speed.
In the search mode, the FF Lamp (forward direction) or
REW Lamp (reverse direction) blinks.
• Set the search dial to its centre click-stop position for
still playback.
To release the search mode, press. the PLAY, STOP,
STILL,
FF or REW Button.
Jog playback (inside ring)
The unit is placed in the jog mode when the search dial
is set to the search/pause (centre click-stop) position.
When the inside ring is now turned. the tape speed can
be varied
from -1 x to +1 x the normal tape speed.
Still playback is established when the inside ring is no
longer turned.
Outer
Dial for search
playback -------./
Inside
Dial for jog playback
• A colour programme may appear in black and white
during search or jog playback: this is normal and not
indicative of malfunctioning.
• The playback pictures may appear distorted during
search or jog playback: this is normal and not indica-
tive of malfunctioning.
• No sound is heard during search or jog playback.
Normal sound
is heard at a tape speed of 1/2x or
higher.
To Finish Playback
Press the STOP Button.
Still Playback and Slow-Motion Playback
The unit is placed in the still picture mode when the
search dial is set to its centre click-stop position.
• When noise appears during still playback, proceed
with the stow tracking adjustment.
Slow Tracking Adjustment
TRACKtNG
+
DD
If noise should appear at the top or bottom of the
picture during still playback or slow-motion playback
(1/25 to 1/2x normal tape speed), press the Tracking
"+" or "-" Button to reduce the noise in the slow-motion
playback mode.
• When still playback continues for more than 5
minutes, the unit will be placed automatically in the
stop mode in order to protect the video heads.
• No sound is heard during still playback.
• During still playback a colour programme may appear in
black or white or the playback image may darken:
this is normal and not indicative of malfunctioning.
Field-by-Field Playback
Press the FF or REW Button during still playback. When
the FF Button
is pressed, the tape is fed by one field
in the forward direction; when the REW Button is
pressed, it is fed by one field in the reverse direction.
When the FF or REW Button is kept depressed, the tape
is played back in the forward or reverse direction at
approximately 1I25th of the normal speed.
Unrecorded Blank Search
If a tape with unrecorded blanks lasting 5 or more
seconds has been loaded, these blanks will be detected
automatically.
(1) Load the tape.
(2) Press the BLANK SEARCH Button.
The tape is searched automatically in the forward
direction and is stopped automatically when an un-
recorded blank lasting 5 or more seconds is
detected.
- E-16-
OPERATING INSTRUCTIONS
Audio Dubbing
"Audio dubbing" is a function which is used to record sound onto an already recorded tape. Sound can be recorded
onto normal audio track CHI or CH2 or onto both the CHI and CH2 channels. (It cannot be recorded onto the Hi-Fi
audio tracks.)
Tape recorder
(only normal audio
signals are recorded)
It is not possible to record MIC input audio and audio input
signals at the same time. The microphone takes precedence
when connections are made to both to the MIC jack and audio
connectors.
Preparations
• Load the pre-recorded cassette tape.
(Check that the accidental erasure prevention tab on
the tape is still intact. When it has been broken out,
the AUDIO DUB Button will not function even if it
is
pressed.)
• USing AUDIO DUB on the menu screen, select the
channels on which the sound is to be added (audio
dubbing).
0000
Microphone
(only normal audio CH1
signals are recorded)
Operation
@
@
0
re::
0 E
@ 0
(1) Press the PLAY Button to start playback.
(2) Press the PAUSE/STILL Button where the sound is
to be added (audio dubbing) to place the unit in the
pause mode.
(3) Press the AUDIO DUB Button.
(4) Audio dubbing starts when the PAUSE/STILL Button is
pressed to release the unit from the pause mode.
(5) To stop the audio dubbing. press the STOP Button.
• When audio dubbing is performed, the previously
recorded sound will be erased and the new sound
will
be recorded in its place.
• Bear in mind that howling may occur jf audio
dubbing is performed with the unit placed near a
TV set.
• Audio dubbing cannot be performed when the
tape's accidental erasure prevention tab has been
broken out.
- E-17-

<0
Remote Controllers
VW-RM1 pause remote controller (op-
tional accessory)
When the VW-RM1 pause remote controller is connected
to this unit, recording can be set to the pause mode
from a distance instead of using the button on the unit
itself.
PAUSE REMOTE
® ®
I@"'@r
rl
®@
@®@
® ®
000
Computer Remote Control
AG-ASOO remote controller (optional ac-
cessory)
When the AG-IA34 34-pin interface board, available as
an optional accessory, is mounted, the unit can be
operated by remote control at a distance of about 5
meters instead of the unit's own operation buttons being
operated.
• The speed of the playback pictures can be varied up
to about
11 times the normal speed in the forward or
reverse direction.
Mounting the 34-pin interface board
First remove the board mounting plate where the interface
board is to be mounted, mount the board, connect the
connector and screw the mounting board into place.
AG-A600 remote controller
Using the optional RS-232C serial interlace board (AG-IA823) and RS-232C cable, as shown in the figure below, a personal
computer can be used to operate the unit in various ways.
Required optional
Serial Interlace board (AG-IA823)
1[;
Personal computer
RS-232C cable
L ~.0BB~-~-
0000 ®®·o 18l~18l V
~ O@@ i§Joo
- E-18-
Cautions for Use
• 00 not insert fingers or any other objects into the
video cassette holder.
• Avoid operating or leaving the unit near strong mag-
netic fields. Be especially careful of large audio
speakers.
• Avoid operating or storing the unit in an excessively
hot, cold, or damp environment as this may result
in
damage both to the unit and to the tape.
• Do not spray any cleaner or wax directly on the unit.
• If the unit is not going to be used for a length 01
time, turn the Power OFF and disconnect the power
plug from the AC outlet.
• Do not leave a cassette in the unit when not in use.
• Do not block the ventilation slots on the sides of the
unit.
• Use this unit horizontally and do not place anything
on the top panel.
• Cassette tape can be used only for one-side, one
direction recording. Two-way or two-track recordings
cannot be made.
• Keep the VTR away from flower vases, tubs, sinks,
etc.
CAUTION: If liquids should be spilled into the VTR,
serious damage could occur.
If you spill any liquid
into the VTR, remove power and consult qualified
service personnel.
• Wipe the VTR with a clean, dry cloth. Never use
cleaning fluids, chemicals
or wax.
• Do not attempt to disassemble the unit. There are no
user serviceable parts inside.
• If any liquid spills inside the unit, have the unit
examined for possible damage.
• Refer any needed servicing to authorized service per-
sonnel.
Cleaning care
for video heads
If the screen should appear as shown below, it means
that the video heads are dirty. It is recommended that
you clean the heads periodically. Use the optional
cleaning tape and special purpose cleaning fluid to
clean the heads. Consult with your dealer if the
symptoms should persist even after cleaning.
Notes:
• We do not recommend that you attempt to clean
the video heads yourself.
• Repeated head cleaning will shorten the service life
of the video heads.
• Nothing can be recorded on the head cleaning
tape.
• If you use cleaning fluid, wipe the cleaned heads
with a dry cloth before using the unit.
Dew Indication
When dew is detected, the salety device of this unit will
operate in order to protect the cassette tape and video
heads.
In case of dew detection, the " d "mark in the counter
lights. Wait until the " d "mark goes out with Power
switch turned
ON to operate the VTR.
.. d R mark lights.
D
Note
Dew condensation normally occurs gradually. Therefore,
there may be cases in which the " d "mark does not
start flashing until 10
or 15 minutes after dew has begun
to condense.
In particular, if the temperature or humidity
in the room change, wait about 20 minutes before using
the unit.
Cause of Condensation
Condensation forms if warm air comes in contact with a
cold object, for example on a window in a well-heated
room
in winter. It may form if the unit or the video
cassette is exposed to sudden changes in temperature
and humidity such as may occur when the unit or the
video cassette is taken from a cold to a warm place.
For instance:
• In a room where the heater has just been turned on
in winter;
• In a room with steam or high humidity:
• If the unit or the cassette is brought from cold sur-
roundings into a well-heated room.
- E-19-
OPERATING INSTRUCTIONS

......
o
OPERATING INSTRUCTIONS
Troubleshooting
Check out the points in the table given below, and consult w~h your dealer if the trouble should persist.
Trouble
No power
No operation even when an
operation button is pressed
No recording
Noise appears on playback
pictures.
No repeat playback
No VISS signal writing
Error Display
Checkpoint/Remedial Action
• Has the power cable been connected?
• Is the power switch in the ON position?
• Has a cassette tape been loaded?
•
Is" d" displayed indicating condensation lighted?
Keep the power supplied to the unit and wait until the" d " in
display goes off.
• Is the Mode Lock Switch at the OFF position?
• Has the tape's accidental erasure prevention tab been
broken out?
• Has the INPUT Selector been set to the proper position?
• Press the Tracking Buttons and adjust.
• Has the MEMORY (MEMO) Button been set to the proper position?
• Has the counter been reset?
• Is the VISS setting on the menu screen at OFF?
• Has an interval of at least 20 seconds been given between
BEGIN and END?
• Is the VISS setting on the menu screen at REC or
REC/PAUSE?
• Has an interval of
at least 30 seconds been given between
one VISS and another VISS signal?
ReI. Page
E-19
E-15
E-14
E-15, E-16
E-11
E-11
E-9
E-13
E-9
E-12
The following error messages will be displayed on the tape counter if an abnormality occurs in the unit. In this case, follow
instructions described below.
• When an error code appears:
• An error code appears on the display.
• All operations are shut down when an error code appears on the display.
• If the error is not released even after taking the remedial action described below, switch off the power, disconnect the power
cable from the power outlet, and contact your dealer immediately.
• List of error codes
Error Code Malfunction Remedial action
E
- C'
Malfunction in elevator These
errors may occur if the video
section
cassette has not been loaded
properly.
E
- :1
Malfunction in loading Try switching the power off and
-,
section
turning it back on again.
E
-
,-, Malfunction in cylinder These
errors may occur if there is
,
section
something wrong with the state of
C -C
Malfunction in reel section
the video cassette. Try switching the
!.. -, power off and turning it back on
E
-b
Incorrect tape tension
again and replacing the video
cassette.
E
-
-,
Malfunction in solenoid Try switching the power off and
,
turning it back on again.
- E-20-

DISASSEMBL Y
PROCEDURES
CONTENTS
2-1. DISASSEMBLY FLOW CHART ..................................... ···· .. ··· .... ·2-2
2-2. DETAILED DISASSEMBLY METHOD ........................................ "2-2
2-2-1. Removal of the Top Panel .......................................................................................... 2-2
2-2-2. Removal of the Front Panel ......................· .. ·..........................·....· .. ·....·............ ·· ....· .. 2-3
2-2-3. Removal of the Bottom Plate .................................................................................... 2-3
2-2-4. Removal of the Timer and Operation C.B.A............................................................... ·2-3
2-2-5. Removel of the Cassette Compartment Unit .............................................................. ·2-3
2-2-6. Removal of the the Rear Panel............·....·..............·.................................................. ·2-4
2-2-7. Removal of the Rear Jack C.B.A............................................................................... 2-4
2-2-8. Removal of the Power Unit ...................................................................................... ·2-4
2-2-9. Removal of the Audio C.B.A ............................... · .. · .. · .. ·...................... ·· ............·....· .. 2-5
2-2-10. Removal of the Video 1 C.B.A................................................................................. ·2-5
2-2-11. Removal of the Video 2 C.B.A................................................................................. ·2-5
2-2-12. Removal of the Video 3 C.B.A................................................................................. ·2-5
2-2-13. Removal of the Mechanism Unit .............................................................................. 2-5
2-2-14. Removal of the System Control & Servo C.B.A......................................................... ·2-6
2-2-15. Removal of the Reel Drive C.B.A. .......................................................................... ·2-6
2-2-16. Removal of the Mother C.B.A................................................................................. ·2-6
2-3. SCREWS ................................................................................ '2-7
2-1
>-
...J
!XI
~
w
Cl)
Cl)
«
Cl)
o

>
--I
ca
~
w
en
en
«
en
Cl
2-1 DISASSEMBLY FLOW CHART
2-2-1
9
TOP PANEL
2-2-3 t
BOTTOM PLATE 2-2-14
SYSCON & SERVO C.B.A.
2-2-15
REEL DRIVE C.B.A.
2-2-2 2-2-16
FRONT PANEL MOTHER C.B.A.
2-2-5 , , 2-2-4
CASSETTE TIMER & OPERATION
COMPARTMENT C.B.A.
2-2-6 2-2-13
REAR PANEL MECHANISM UNIT
2-2-8 , 1 2-2-7
POWER UNIT REAR JACK C.B.A.
Figure D1.
The above flowchart describes the order of steps for
rmoving the cabinet parts and certain printed circuit
boards
in order to gain access to the unit, follow the steps
in the reverse order.
2-2 DETAILED DISASSEMBLY METHOD
2-2-1. Removal of the Top Panel
1. Unscrew 2 screws (A) on the Top Panel.
2. Carefully lift the rear of the Top Panel and slide it as
shown
in the arrow (Figure D 2).
2-2
2-2-9
I II AUDIO C.B.A.
2-2-10
I I
VIDEO 1 C.B.A.
I
2-2-11
I VIDEO 2 C.B.A. II
2-2-12
I I
VIDEO 3 C.B.A.
I
[Top View 1
Top Panel 2 Screws (A)
Figure D2

2-2-2 Removal of the Front Panel
1. Remove the Jog Dial on the Front Panel.
2. Unscrew the 2 screws ( B ) as shown in the Figure.
3. Unlock2 locking portions ( F1 ), and carefully pull out
the Front Panel from the deck (Figure
D3. ).
Front Panel 2 Screws
(B)
[Top View 1
@ @
2 Locking Portions (F1)
[ Bottom View 1
Firure D3
2-2-3. Removal of the Bottom Plate
1. Unscrew 6 screws (C)on the Bottom Plate.
2. Lift off the Bottom Plate (Figure D4. ).
[ Bottom View]
Bottom Plate
6 Screws (C)
Figure D4
2-2-4. Removal of the Timer and Operation C.B.A.
1. Disconnect the 2 Flexible Wires from the connector
P6701 and P6702 on the Timer and Operation
C.B.A
..
2. Unscrew the 2 screws (D) and a screw ( D-1 ) on the
Timer and Operation C.B.A and unlock 5 locking
portions (F2).
3. Carefully remove the Timer and Operation C.B.A.
(Figure
D5. )
5 Locking Portions
(F2)
[ Front View]
screw ( D-1 )
01101101
P6702 Timer & Operation 2 Screws P6701
C.B.A. (D)
Figure D5
2-2-5. Removal of the Cassette Compartment Unit
1. Unscrew 2 screws(E) and slide the Cassette Holder
Until appearing 2 screws (F) and then unscrew 2
screws (F) (Figure
D6. ).
2. Disconnect the Flexible Wire from connector P1508
mounted on the Front Loading C.B.A., then carefully
pull out the Cassette Compartment Unit.
[Top View]
Cassette 2 Screws (E)
Compartment
2 Screws
(F) P1508
Figure D6
2-3
>-
-I
ca
~
w
(/)
(/)
«
(/)
c